Figure 3: Average solubility of carbon in the grain interior 𝑥 C i n t e r i o r and resulting solubility 𝑥 C g l o b a l in nanocrystalline 𝛼 -iron at 673 K as a function of grain size. Note that the axis of 𝑥 C i n t e r i o r is scaled by a factor 1000.